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docs(response-interceptor.md): add headers modification example #724

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Update response-interceptor.md
stefanwright1988 Mar 8, 2022
07b4c97
docs: fixed issues with linting in the file
stefanwright1988 Mar 9, 2022
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24 changes: 24 additions & 0 deletions recipes/response-interceptor.md
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Expand Up @@ -128,3 +128,27 @@ const proxy = createProxyMiddleware({

// http://localhost:3000/wikipedia/en/7/7d/Lenna\_%28test_image%29.png
```

## Manipulate response headers

```js
const { createProxyMiddleware, responseInterceptor } = require('http-proxy-middleware');

const proxy = createProxyMiddleware({
target: 'http://www.example.com',
changeOrigin: true, // for vhosted sites

/**
* IMPORTANT: avoid res.end being called automatically
**/
selfHandleResponse: true, // res.end() will be called internally by responseInterceptor()

/**
* Intercept response and remove the
**/
onProxyRes: responseInterceptor(async (responseBuffer, proxyRes, req, res) => {
res.removeHeader('content-security-policy'); // Remove the Content Security Policy header
res.setHeader('HPM-Header', 'Intercepted by HPM'); // Set a new header and value
}),
});
```